A few buying tips will make your humidifier shopping a little easier. If you are not sure that you really need a humidifier, you may want to measure the humidity level in your home with a hygrometer. They are inexpensive and can help you monitor the air you breathe so you can take action to maintain it at the optimum level. Review the recommended moisture level in Controlling Moisture. Sorting through humidifier details can be daunting and consumers have lots of questions
Determine The Type of Humidifier You Need – Cool vs Warm Mist
First, you need to decide what type of humidifier you are looking for – warm or cool mist, or whether a dual unit would be more convenient. If you’re not sure, learn the difference between a warm and cool mist humidifier to help you determine what is best for you. Read why some feel a cool mist is safer when young children are present. There are also models that humidify and purify (or wash) the air – these are usually a more expensive, but may be worth considering. For more about maintaining a proper home humidity, read Controlling Home Moisture and learn why too little or too much humidity can be problematic.
Type of Humidifica
There are basically two types of processes that a humidifier might use to generate moisture or steam – evaporative which is more common and generally the cheapest, and ultrasonic which produces a finer water mist. Either type can be used for warm or cool mist models, but ultrasonic is considered safer since it does not produce a mist by boiling water. Therefore the humidifier does not contain hot water that could create a hazard if the unit was knocked over.
Humidifier Styles – Personnal, Portable, Console or Flow-Through ByPass
A personal humidifier is a very compact, no more than 1-liter that can be taken on trips to provide moisture where you need it. Though efficient for personal use, the coverage area is limited. Also considered portable, a room humidifier can vary in capacity from compact to large room size and is most commonly used in bedrooms or living areas. A console model is a large, free-standing unit on wheels. Because of the larger capacity and efficiency, console models are considered whole-house units. Another type of whole-house humidifier is a flow-through bypass unit that must be installed on the home’s duct system.
Controlling Moisture Output
While some humidifiers are basic in moisture control with two or three variable fan speeds, others may have a built-in hygrometer to indicate the moisture level in the room and a humidistat that you can set for the unit to cycle on/off to maintain the proper level. Unless you want to monitor the room’s moisture level and adjust settings to maintain it, these measurement features are very handy and worth the extra cost.
Ease of Handling & Maintenance
Some water tanks are a little harder to remove and refill, some lift off easily. Could the weight of a full tank be a problem for you? Take time to inspect the unit to see how easy the water tank removes from the base. Also note if the model will require filter changes, check on availability, as well as how easy they are to change. Consider purchasing a couple of filters along with your new humidifier as maintenance is crucial to reduce the risk of bacteria and unhealthy air.
Operation Noise Level & Settings
Expect some operating noise from a humidifier, but if the unit is for a bedroom, you may want to look for one with a low, night or silent setting. This being said, my silent model is not really that quiet, but we adapted quickly to it. It actually helps to ‘drown’ out other household noises. You should have at least two settings on the unit, high and low options. Ultrasonic humidifiers are considered the quietest to operate since there is no boiling of water (hissing) and moisture is expelled in a very fine mist.